Other Answers

There are no codes to get certain animals to move into your town, If you want to increase the chances of getting new people just go visit someone's town and then (there seems to be a high probability) an animal from your town will move away, or if the person on other game has that person you want then keep having him visit you.

What you have to do is have one of your friends to get Animal Crossing and save thier game on thier Memory Card and then ask them to come over and bring the Memory Card that has the Animal Crossing file.

Then go to the train after you save your game.

The monkey will ask if you're going on a trip.If you remember correctly.Some of the animals say that if you go to a friends town,they might tag along(They dont really go with you) or move there.

So,ask them if they have this specific person there and then if that animal likes you or that town,they will move abck with you.